If you’re on Ubuntu 24.04, please see this thread.
However, installing Anki (anki-24.04.1-linux-qt6.tar.zst) on a fresh install of (the finally released) Ubuntu 24.04, I see no problems. Anki runs as expected. This is the output from running (and manually closing) Anki on my recent install:
pinnerup@ergi:~/Downloads$ anki
Anki starting...
Initial setup...
Preparing to run...
Qt warning: QGuiApplication::setDesktopFileName: the specified desktop file name ends with .desktop. For compatibility reasons, the .desktop suffix will be removed. Please specify a desktop file name without .desktop suffix
2024-04-28 01:06:59,387:INFO:aqt.mediasrv: Serving on http://127.0.0.1:32971
Starting main loop...
2024-04-28 01:07:02,081:WARNING:waitress: unhandled close event
Therefore, whatever issue caused Anki to core dump on earlier (beta?) versions of Ubuntu 24.04 may have been overcome, so there might no longer be good reason to instruct people to run the given command, unless they’re having persistent problems.
I agree, that problem I had with daily build (not even alpha =) ) of Ubuntu 24.04 seems gone. I did not check particularly Anki, however similar problem with Zoom, for example, gone so I expect Anki also will work without any problems